| 摘要 |
PURPOSE: A power amplification circuit for mobile communication terminal is provided to improve the power efficiency of a terminal by bypassing a power amplifier according to a power level through a band pass filter. CONSTITUTION: A driving amplifier(21) amplifies a signal inputted through a signal input tap(I2) from outside to a power for using in a terminal. A power amplifier(22) amplifies the signal transported from the driving amplifier(21) to a power necessary to a transmitting/receiving. A band pass filter(23) connects an input port with an output port of the power amplifier(22), bypasses the power amplifier(22) according to the power level of the signal inputted from outside, and transports the signal to a signal output tap(O2). |
